78265066 has 16 divisors (see below), whose sum is σ = 134811360. Its totient is φ = 33702480.

The previous prime is 78265039. The next prime is 78265069. The reversal of 78265066 is 66056287.

It is a super-2 number, since 2×78265066² = 12250841111968712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78265069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93201 + ... + 94036.

It is an arithmetic number, because the mean of its divisors is an integer number (8425710).

Almost surely, 2^78265066 is an apocalyptic number.

78265066 is a deficient number, since it is larger than the sum of its proper divisors (56546294).

78265066 is a wasteful number, since it uses less digits than its factorization.

78265066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187269.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 78265066 is about 8846.7545461599. The cubic root of 78265066 is about 427.7493109347.

The spelling of 78265066 in words is "seventy-eight million, two hundred sixty-five thousand, sixty-six".